标签:upper begin 验证 get 程序 bound long printf 输入
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#include <stdio.h> #include <stdbool.h> long get_long(void); long square_sum(long num1, long num2); bool get_range(long start, long end, long lower_bound, long upper_bound); int main(void) { long result; const long MIN = -10000L; const long MAX = +10000L; long begin, terminus; printf("the range is -10000 -- +10000.\n"); printf("please input the lower_bound(0 to quit): "); begin = get_long(); printf("please input the upper_bound(0 to quit): "); terminus = get_long(); while(begin != 0 || terminus != 0) { if(get_range(begin, terminus, MIN, MAX)) { printf("please try again.\n"); } else { result = square_sum(begin, terminus); printf("squre sum betweent %ld and %ld is %ld.\n",begin, terminus, result); } printf("please input the lower_bound: "); begin = get_long(); printf("please input the upper_bound: "); terminus = get_long(); } return 0; } long get_long(void) { long num; char ch; while((scanf("%ld", &num)) != 1) { while((ch = getchar()) != '\n') putchar(ch); printf(" is not num.\n"); printf("please input num: "); } return num; } long square_sum(long num1, long num2) { long square_sum; int i; for(i = num1; i <= num2; i++) { square_sum += i * i; } return square_sum; } bool get_range(long start, long end, long lower_bound, long upper_bound) { bool tab = false; if(start > end) { printf("start > end!!!!\n"); tab = true; } if(start < lower_bound || end < lower_bound) { printf("start or end < lower_boudn.!!!!!!\n"); tab = true; } if(start > upper_bound || end > upper_bound) { printf("start or upper > upper_bound.!!!!!\n"); tab = true; } return tab; }
标签:upper,begin,验证,get,程序,bound,long,printf,输入 来源: https://www.cnblogs.com/liujiaxin2018/p/15192223.html
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